#!/usr/bin/env bash

usage() {
  cat 1>&2 <<EOF
dots
A git wrapper for dotfiles with a few tricks.

USAGE:
    dots [CUSTOM SUBCOMMAND]
    or
    dots [GIT SUBCOMMAND]

CUSTOM SUBCOMMANDS:
    install                 Install new system packages
    upgrade <packages>...   Upgrade all packages or specified ones
    dump                    Dump installed packages to list
    patch <patch-file>      Apply a pre-made patch
    open <dotfile>          Open a dotfile in an editor
    web                     Open the repo in the browser
EOF
}

dots-git() { git --git-dir="$HOME/.dotfiles" --work-tree="$HOME" $@; }
run-command() { echo "$1"; eval "$1"; }
os() {
  [[ "$(uname -s)" =~ "Darwin" ]] && echo "macOS"
  [[ "$(uname -r)" =~ "MANJARO" ]] && echo "Manjaro"
}
err-not-supported() { 
  echo "Operating system not supported for this command"
  exit 1
}

case "$1" in

  -h | --help | help) usage;;

  install)
    case `os` in
      macOS)   run-command 'brew bundle install --global --no-upgrade --no-lock';;
      Manjaro) run-command 'yay -S --needed - < $HOME/.pkglist.txt';;
      *)       err-not-supported;;
    esac
    ;;

  dump)
    case `os` in
      macOS)   run-command 'brew bundle dump --global --force';;
      Manjaro) run-command 'yay -Qqe > $HOME/.pkglist.txt';;
      *)       err-not-supported;;
    esac
    ;;

  upgrade)
    case `os` in
      macOS)   run-command 'brew upgrade';;
      Manjaro) run-command 'yay -Syu';;
      *)       err-not-supported;;
    esac
    ;;

  patch) dots-git apply $(dots-git ls-files ${XDG_DATA_HOME:-$HOME/.local/share}/patches | fzf --query "$2" --multi --select-1 --preview="bat --color=always {}");;

  open) $EDITOR "$HOME/$(git --git-dir="$HOME/.dotfiles" ls-files | fzf --query "$2" --select-1 --preview "bat --color=always $HOME/{}")";;

  web) gh repo view --web knowler/dotfiles;;

  issue | pr) gh $@ --repo knowler/dotfiles;;

  *) dots-git $@;;

esac